Yasuo:
- Before, you needed just IE to get 40%. Now you need IE+Glove for 40%.
- Before, he reached 100% crit on full Zeal item + IE. It's still the same.
- Before, with 100% crit (Zeal item + IE), he dealt 225% AD on auto. Now, he deals 180% on auto, 20% of which is converted to true damage. Meaning 144% physical + 36% true damage on auto.
In order to calculate the breaking point, (36% true damage [new]) = (225%-144% physical damage [difference between old and new]) -> 36% true damage = 81% physical damage -> 1 true damage = 2.25 physical damage -> 55% physical dmg reduction -> 120 armor is needed.
Conclusion: Yasuo is stronger on targets with Armor > 120, and weaker on Armor < 120. Seems reasonable to me.
- Don't forget that Yasuo's ult provides him armor penteration on crits. It generally means that true damage will always be less effective on him, relative to his normal state (inb4 bug where armor penetration is calculated before the true damage on IE, lul).
@Corki: The passive on the new ER has a 30sec CD. Also, do note that it reduces 20% of remaining cooldown and not total cooldown.
That being said, yes, this item surely will make Corki and Jayce stronger.